Decouple fsqrt from gpul optimizations, implementing fsqrt.ll.
Remove the -enable-gpopt option which is subsumed by feature flags.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23218 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 8490adb..d01dc05 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -54,7 +54,7 @@
   setOperationAction(ISD::SREM , MVT::f32, Expand);
   
   // If we're enabling GP optimizations, use hardware square root
-  if (!TM.getSubtarget<PPCSubtarget>().isGigaProcessor()) {
+  if (!TM.getSubtarget<PPCSubtarget>().hasFSQRT()) {
     setOperationAction(ISD::FSQRT, MVT::f64, Expand);
     setOperationAction(ISD::FSQRT, MVT::f32, Expand);
   }